rs104886113

Variant names:

• chrX-108591591-GC-G
• rs104886113
• NM_033380.3:c.1376delC

Your query was ambiguous. Multiple possible variants found:

• chrX-108591591-GC-G
• chrX-108591591-GC-GCC

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_033380.3(COL4A5):​c.1376delC​(p.Pro459GlnfsTer15) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position has been classified as Pathogenic. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: COL4A5 NM_033380.3 frameshift
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0370
• Publications: 3 publications found

Genes affected

COL4A5 (HGNC:2207): (collagen type IV alpha 5 chain) This gene encodes one of the six subunits of type IV collagen, the major structural component of basement membranes. Mutations in this gene are associated with X-linked Alport syndrome, also known as hereditary nephritis. Like the other members of the type IV collagen gene family, this gene is organized in a head-to-head conformation with another type IV collagen gene so that each gene pair shares a common promoter. Alternatively spliced transcript variants have been identified for this gene. [provided by RefSeq, Aug 2010]

COL4A5 Gene-Disease associations (from GenCC):

• Alport syndrome

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen, G2P
• X-linked Alport syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Genomics England PanelApp, Myriad Women’s Health, Orphanet, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL4A5	NM_033380.3	c.1376delC	p.Pro459GlnfsTer15	frameshift_variant	Exon 21 of 53	ENST00000328300.11	NP_203699.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL4A5	ENST00000328300.11	c.1376delC	p.Pro459GlnfsTer15	frameshift_variant	Exon 21 of 53	1	NM_033380.3	ENSP00000331902.7
COL4A5	ENST00000483338.1	c.200delC	p.Pro67GlnfsTer15	frameshift_variant	Exon 5 of 20	1		ENSP00000495685.1
COL4A5	ENST00000361603.7	c.1376delC	p.Pro459GlnfsTer15	frameshift_variant	Exon 21 of 51	2		ENSP00000354505.2

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1095511 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 361051

African (AFR) AF: 0.00 AC: 0 AN: 26360

American (AMR) AF: 0.00 AC: 0 AN: 35197

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19363

East Asian (EAS) AF: 0.00 AC: 0 AN: 30182

South Asian (SAS) AF: 0.00 AC: 0 AN: 54075

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40525

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4133

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 839679

Other (OTH) AF: 0.00 AC: 0 AN: 45997

GnomAD4 genome Cov.: 22

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.037
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs104886113; hg19: chrX-107834821;